82771405420660 has 96 divisors (see below), whose sum is σ = 197871842310912. Its totient is φ = 28789231595520.

The previous prime is 82771405420549. The next prime is 82771405420673. The reversal of 82771405420660 is 6602450417728.

It is a super-2 number, since 2×82771405420660² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 82771405420598 and 82771405420607.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 192637182 + ... + 193066378.

It is an arithmetic number, because the mean of its divisors is an integer number (2061165024072).

Almost surely, 2^{82771405420660} is an apocalyptic number.

It is an amenable number.

82771405420660 is an abundant number, since it is smaller than the sum of its proper divisors (115100436890252).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

82771405420660 is a wasteful number, since it uses less digits than its factorization.

82771405420660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 467353 (or 467351 counting only the distinct ones).

The product of its (nonzero) digits is 4515840, while the sum is 52.

The spelling of 82771405420660 in words is "eighty-two trillion, seven hundred seventy-one billion, four hundred five million, four hundred twenty thousand, six hundred sixty".